Releases Saturday 8 July 2000
No 7253 Volume 321

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(1) DRUG USE AND HEPATITIS INFECTION ARE
WIDESPREAD IN IRISH PRISONS

(2) TWOFOLD INCREASE IN ADULT ASTHMA IN 20
YEARS, IRRESPECTIVE OF SMOKING



(1) DRUG USE AND HEPATITIS INFECTION ARE
WIDESPREAD IN IRISH PRISONS

(Prevalence of antibodies to hepatitis B, hepatitis C, and HIV
and risk factors in Irish prisoners: results of a national cross
sectional survey)
http://bmj.com/cgi/content/full/321/7253/78

Drug use and infection with hepatitis C are endemic among
Irish prisoners, stressing the need for scrutiny and
improvement of the Irish prison healthcare system, according
to a study in this week's BMJ.

Researchers in the Republic of Ireland surveyed over 1,300
prisoners aged between 16 and 67 years of age who were
considered to be at medium or high risk for blood borne viral
infections. The authors found 9% of prisoners had evidence
of current or past infection with hepatitis B, 37% with
hepatitis C and 2% with HIV. Drug use is the most important
predictor of infection, say the authors. Prisoners who
reported injecting drugs were 81 times more likely to be
positive for hepatitis C and 22 times more likely to be
positive for hepatitis B than non-drug using prisoners.
Alarmingly, the authors also found that 21% of prisoners
reported that they had started to inject drugs while in prison
and 71% reported sharing needles in prison - clearly
increasing their risk of infection even further.

In Ireland, as elsewhere, injecting drug use in prison is here to
stay, say the authors. Despite improvement in community
drug treatment services, the Irish prison healthcare system has
not kept pace with the high rates of injecting drug use and
sharing of needles within Irish prisons. They call on policy
makers, researchers and clinicians working in prisons to
implement measures to ensure that being in prison does not
add to the health risks of this already disadvantaged
population.

Contacts:

Fiona Bradley, Lecturer in General Practice, Department of
Community Health and General Practice, Trinity College,
Dublin 2, Republic of Ireland.
Email: fbradley@tcd.ie

Lelia Thornton, Specialist in Public Health Medicine, Eastern
Regional Health Authority and Lecturer in Public Health,
Department of Community Health and General Practice,
Trinity College, Dublin 2, Republic of Ireland.
Email: thornton@ehbph.iol.ie

(2) TWOFOLD INCREASE IN ADULT ASTHMA IN 20
YEARS, IRRESPECTIVE OF SMOKING

(Intergenerational 20 year trends in the prevalence of asthma
and hay fever in adults: the Midspan family study surveys of
parents and offspring)
http://bmj.com/cgi/content/full/321/7253/88

The level of asthma in adults has increased more than twofold
in 20 years, irrespective of smoking, according to a unique
study in this week's BMJ.

Researchers in Scotland compared levels of asthma, hay
fever and other chest problems in married couples surveyed
during the 1970s with levels in their offspring - surveyed at
similar ages - 20 years later. The authors found that hay fever
and asthma increased during the 20-year interval in both
smokers and non-smokers. In those who had never smoked,
hay fever increased from 6% to 20% and asthma increased
from 3% to 8%. In those who had smoked, hay fever
increased from 5% to 16% and asthma increased from 2% to
5%. During this period, smoking halved in both men and
women.

Despite increased asthma, reports of frequent chest wheezing
decreased over time. Besides the fall in smoking, these
findings may be the result of improved asthma treatment,
suggest the authors, as prescriptions of inhaled steroid
medication for asthma increased more than sixfold between
1980 and 1990.

Improved awareness of asthma does not appear to be
responsible for the trend in allergic asthma, conclude the
authors, but greater awareness may account for trends in
non-allergic asthma. They stress the importance of future
research to establish which types of asthma are becoming
more common amongst adults.

Contact:

Mark Upton, general practitioner and clinical epidemiologist,
Thornaby and Barwick Medical Group, The Health Centre,
Thornaby, Cleveland TS17 0BZ
Email: marknupton@aol.com


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